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/*
This file is part of GNU Taler
(C) 2022 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import { i18n, setupI18n } from "@gnu-taler/taler-util";
import { ComponentChildren, createContext, h, VNode } from "preact";
import { useContext, useEffect } from "preact/hooks";
import { useLang } from "../hooks/index.js";
import { Locale } from "date-fns";
import {
es as esLocale,
enGB as enLocale,
fr as frLocale,
de as deLocale
} from "date-fns/locale"
export type InternationalizationAPI = typeof i18n;
interface Type {
lang: string;
supportedLang: { [id in keyof typeof supportedLang]: string };
changeLanguage: (l: string) => void;
i18n: InternationalizationAPI;
dateLocale: Locale,
completeness: { [id in keyof typeof supportedLang]: number }
}
const supportedLang = {
es: "Espanol [es]",
en: "English [en]",
fr: "Francais [fr]",
de: "Deutsch [de]",
sv: "Svenska [sv]",
it: "Italiane [it]",
};
const initial: Type = {
lang: "en",
supportedLang,
changeLanguage: () => {
// do not change anything
},
i18n,
dateLocale: enLocale,
completeness: {
de: 0,
en: 0,
es: 0,
fr: 0,
it: 0,
sv: 0,
}
};
const Context = createContext<Type>(initial);
interface Props {
initial?: string;
children: ComponentChildren;
forceLang?: string;
source: Record<string, any>;
completeness?: Record<string, number>;
}
// Outmost UI wrapper.
export const TranslationProvider = ({
initial,
children,
forceLang,
source,
completeness: completenessProp
}: Props): VNode => {
const completeness = {
en: 100,
de: !completenessProp || !completenessProp["de"] ? 0 : completenessProp["de"],
es: !completenessProp || !completenessProp["es"] ? 0 : completenessProp["es"],
fr: !completenessProp || !completenessProp["fr"] ? 0 : completenessProp["fr"],
it: !completenessProp || !completenessProp["it"] ? 0 : completenessProp["it"],
sv: !completenessProp || !completenessProp["sv"] ? 0 : completenessProp["sv"],
}
const { value: lang, update: changeLanguage } = useLang(initial, completeness);
useEffect(() => {
if (forceLang) {
changeLanguage(forceLang);
}
});
useEffect(() => {
setupI18n(lang, source);
}, [lang]);
if (forceLang) {
setupI18n(forceLang, source);
} else {
setupI18n(lang, source);
}
const dateLocale = lang === "es" ? esLocale :
lang === "fr" ? frLocale :
lang === "de" ? deLocale :
enLocale;
return h(Context.Provider, {
value: { lang, changeLanguage, supportedLang, i18n, dateLocale, completeness },
children,
});
};
export const useTranslationContext = (): Type => useContext(Context);
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